Water to air intercoolers.
 

What do u guys think of these, I'm currently running a chinese front mount on the FC at the moment but a guy on ausrotary is selling a PWR water - air 8 X 10 barrell intercooler, pump and rad for $600au. I saw just the barrell on another site for 1500. He said he was recording air temps 7deg above ambient.

Whats the downside to these?

Downside? they are fucked!

Huge pressure drops across it, shit load of plumbing, still need a big radiator out front.

His "claim" is total bullshit ! Ask him to provide a data log of the Air temp at 8000rpm in 4th gear at 220kph or so, after 10 or more seconds of full throttle on a 20 deg Day. I guarantee you it will be 50 deg C or more.

Keep your IC you have now and water inject it, I just sold two kits to customers in Towomba (last week), one Rotary dude and another bloke with a 930 Turbo Porsche :) This is the only way to get your charge air temp down and keep the engine alive.

Well a pressure drop would be expected. No pressure drop simply means the air is moving through the IC too fast to cool quickly. WI costs more then $600 though lol.

We bought about half a dozen of these barrel cores in 2004/5, no one had a Don Mega result with them. A mate of mine runs one in his Time Attack RX7 and I can tell you for fact that there is NO WAY it gets anywhere near the charge temp that turd muncher is claiming :) its very close to what I typed before.

The big problem with these things is once you have got over the heat sink ability of the water you are back at square one and need to cool the poofter.

A little historical context is needed here. Renault F1 used to use water to air combined with air to air cores in like 1982, right after that they fucked them off for air to air units and water injection ;) the only place a water to air is good is a super low duty event like a drug race, where you can fill it with dry ice or some other gay shit and get a benefit for 10 seconds, just before the motor lets go PAC style :smilielol5:

Doing a little more research. Seems the veyron runs a water to air intercooler. And would set up an icebox in the reservoir for runs down the strip etc. I think I'm liking the look of it as I can ditch all the AC piping and set up a proper CAI as well.

Every front running ST289 rotary I have worked with has ditched the water to air set up. Most run a simple air to air as its lighter and faster.

Trust me ice water and IC is a nightmare, and dry ice is an even bigger head fuck, not to mention untunable as well.

drop every 10 deg C = 2% more power or there abouts.
It is far easier to drop charge temp with WM50/50 then any horse cock cooler set up, and its far superior inside your engine too ;) Quite a few are running water on methanol with big FMIC ;) its the top set up :)

Sorry to be a noob but whats a st289? air - air is faster? I was liking the look of the short IC piping. It seemed like a good idea for street driving as well.What about a water - air cooler with WI lol.

28x9" slick 1000+bhp rotaries

Air to Air is simpler, lighter, faster. If you want to reduce the charge temp then water/methanol at 50/50 ratio is the ultimate way, you can save wasting fuel to cool combustion down and you can make much much more power with less peak pressure stress on your engine, nothing can beat it.

W to A is just homo......

Yeah I get that. However the cops seem to frown upon FMIC's, so a water - air could get me out of trouble there. Theres no race tracks up here all the car would really get used for is the strip, or if I join the car club up here (which i plan to) the occasional hill climb in which the ice water could be a benefit. I don't really boost around town street driving and it would remove the I/C out of the way of my radiator. For the price I think it's almost worth doing over my air - air setup. The piping of it really shits me. If it's insufficient then I could still run WI with it. Been doing some research online and it seems like it could suit my needs, I mean it can't be all bad if the veyron runs one. I'll do a bit more research tonight me thinks.

Try it out let us know how you go, remember if you want to save your engine though internal water injection is the only way http://machinedesign.com/article/unl...-hot-rods-1103

Very mis understood science to car people, second nature though to engineers and plane people ;)

Yeah I am aware. I don't think I'll be running the engine that hard this time round though. Looking at making decent power on relatively low boost.

p.s when you say plane people I have a cert 4 as an aircraft structual fitter and only a few modules left on my cert 4 aircraft maintenance engineer =D

I tell you what if it doesn't work I'll grab a WI kit off you

You know you love it :) 500mph water injected

http://dailyator.com/wp-content/plug...er-660x440.jpg

Yeah, shame theres no WI on the gas turbine engines or I could swipe one from work LOL.

Also slightly turned off by the W/A setups now as a bit of a search on the rx7club shows that BDC likes them.

:rofl:

I was going to try a W2A IFF my HMIC wasn't getting the job done. My intercooler setup get's it done. I see close to ambient temps cruising around town and even when flogging the thing at the track, they rarely get high enough to warrant anything else.

So true about 2 things, w2a being good for very short drag race running. After that though, the water get's hot and there's nothing that can really be done about it.

The other thing that's oh so true, PWR sucks my sack. Good intercooler, but their customer service is fucking horrible. I ordered A "custom" intercooler from them, pais $100 in shipping to get it to me on time. THey fucked up the outlets. When I called them on it they got all pissed, I spoke with the owner who got pissed, not at his croanies for not being able to follow simple directions, but at me! Then they wouldn't reimburse me for shipping to send the thing back, and charged me shipping to ship the proper pne to me, they didn't listen and they painted thier logo on the core like I had specifically asked them NOT to. All in all I paid >$200 in shipping for a $400 intercooler. Fuck PWR.

:smilielol5: